<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>不同宽度的布局示例</title>
<link rel="stylesheet" type="text/css" href="teststyle.css">
</head>
<body>
    <div class="container">
        <div class="item item1">宽度 2</div>
        <div class="item item2">宽度 1</div>
        <div class="item item3">宽度 3</div>
    </div>
</body>
</html>
